TY  - BOOK
AU  - Griffiths, P.A.
TI  - Exterior differential systems and the calculus of variation
SN  - 9780817631031
U1  - 514.763.63 
PY  - 1983///
CY  - New york
PB  - Springer
KW  - MATHEMATICS
KW  - CALCULUS OF VARIATION
KW  - EXTERIOR DIFFERENTIAL SYSTEMS
ER  -